2 files changed, 21 insertions, 0 deletions
diff --git a/chrome/test/automation/browser_proxy.cc b/chrome/test/automation/browser_proxy.cc
index ce47335..faead8f 100644
--- a/chrome/test/automation/browser_proxy.cc
+++ b/chrome/test/automation/browser_proxy.cc
@@ -286,6 +286,24 @@ bool BrowserProxy::WaitForTabCountToChange(int count, int* new_count,
   return false;
 }
 
+bool BrowserProxy::WaitForTabCountToBecome(int count, int wait_timeout) {
+  const TimeTicks start = TimeTicks::Now();
+  const TimeDelta timeout = TimeDelta::FromMilliseconds(wait_timeout);
+  while (TimeTicks::Now() - start < timeout) {
+    Sleep(automation::kSleepTime);
+    bool is_timeout;
+    int new_count;
+    bool succeeded = GetTabCountWithTimeout(&new_count, wait_timeout,
+                                            &is_timeout);
+    if (!succeeded)
+      return false;
+    if (count == new_count)
+      return true;
+  }
+  // If we get here, the tab count doesn't match.
+  return false;
+}
+
 bool BrowserProxy::WaitForTabToBecomeActive(int tab,
                                             int wait_timeout) {
   const TimeTicks start = TimeTicks::Now();
diff --git a/chrome/test/automation/browser_proxy.h b/chrome/test/automation/browser_proxy.h
index b2c92ca..3cc681e 100644
--- a/chrome/test/automation/browser_proxy.h
+++ b/chrome/test/automation/browser_proxy.h
@@ -122,6 +122,9 @@ class BrowserProxy : public AutomationResourceProxy {
   // Returns false if the tab count does not change.
   bool WaitForTabCountToChange(int count, int* new_count, int wait_timeout);
 
+  // Block the thread until the tab count is |count|.
+  bool WaitForTabCountToBecome(int count, int wait_timeout);
+
   // Block the thread until the specified tab is the active tab.
   // |wait_timeout| is the timeout, in milliseconds, for waiting.
   // Returns false if the tab does not become active.